S-GTM doesn't receive ecom events after checkout anymore

Hi, although our serverside gtm was receiving all ecom events properly, i just noticed that sgtm doesn’t receive ecom events after checkout. browser side gtm shows all, datalayer is okay and I can see events in network tab for serverside ga stream but weirdly it does not use our server URL for the events after checkout..
events after checkout directly going to google analytics without visiting our server lol i did not change anything in gtm for last 2 weeks.. did anyone encounter this kinda issue? was there any update from google side and I missed?
i would really appreciate your feedback on this..